Question

Clarence solved the equation 3x + 15 = 33 and showed the following work.

3x + 15 = 33
3x + 15 - 15 = 33
3x = 33
=
x = 11

Which of the following is true?

Answer 1

3x+15 is the only true one there, because working the problem out, the working out should be:

3x+15=33
3x=33-15
3x=18
x=18÷3
thus x=6